You have connection issues while managing Azure virtual machine servers using SSH. What should you check?

While checking the username and password is important for establishing an SSH connection to Azure virtual machine servers, the most relevant aspect of troubleshooting connection issues primarily involves checking network-related configurations.

Network security group rules regulate the inbound and outbound traffic to your Azure resources, including virtual machines. If the rules are not appropriately set to allow SSH traffic (typically over port 22), connection attempts will fail regardless of whether the username and password are correct. This is often a common oversight when managing Azure resources.

Additionally, firewall settings can also play a crucial role in connection issues, as they may block the SSH protocol if not configured correctly. Therefore, examining the network security group rules will directly impact your ability to connect, making it essential in this scenario.

In light of this, the suitable course of action when faced with connection issues while managing Azure virtual machine servers using SSH is to verify the network security group rules to ensure that port 22 for SSH is open and accessible.